Ronco Plastics 52H - 33 Gallon Plastic RV Holding Tank (46.0" x 16.0" x 12.75")

Sixteen inches wide, twelve and three-quarters deep: the 52H is the narrow-and-deep answer in Ronco's 33 gallon class, a 46 x 16 x 12.75 inch molding for the slot between a frame rail and a holding bay wall where wider tanks never had a chance. Depth is the compensating dimension, and it buys good drain-down geometry toward a bottom outlet along the narrow floor.

The blank weighs about 25 pounds and serves gray or black water exclusively; H-series tanks carry no potable rating. Full, plan for roughly 275 pounds, 33 gallons at 8.34 pounds per gallon, on a footprint that concentrates load in a narrow strip, so the supporting structure below should run the tank's full length.

The rest of the 33 gallon family covers other geometries: the 15H leads the undimensioned shapes, the 38H sits one gallon down, and the 20H side-dump goes long and shallow at 63 x 20.25 x 8.5. Each is rotomolded in Tustin, California by Ronco Plastics, tank builders since 1974, with spin-weld or threaded fittings installed to order: print the drawing below, mark your inlet, outlet, and vent along the length, and the tank ships built to your marks. Browse RV holding tanks for the full set. OneSource Plastics is an authorized Ronco Plastics dealer.

Technical drawing: download the Ronco Plastics 52H dimensional drawing - print it to plan your install and mark exactly where you want fittings located; Ronco installs spin-weld or threaded fittings to your marked spec.